Electrically-heated curling-iron.



n Bi. HERTZBERG & M. J. woHL. v ELBGTBIGALLY HEATED CUBLING IRON.

APPLICATION I'ILED APB. 18, 1907.

UNITED sTAfrEs' PATENT OFFICE.

HARRY HERTZBERG AND MAURICE J. WOHL, or NEW YORK, N.\Y AssIGNons roECONOMY ELECTRIC COMPANY, OEBEOOKLYN, NEW YORK, A CORPORATION OF NEWYORK.

ELECTICALLYBEATED CURLING-IRON.

Speciication of Letters Patent.

.retentea oct. .13, i908.

Application mea Aprii 13,1907. senat No. 368,836.

To all whom 'it may concerm' i Be it known.that we, HARRY HERTZBERG.

and MAURICE J Worin, citizens of the United Y States, residing at thecity of New York,

borough of Brooklyn, andfState of New* York, have invented a certain newand useful Electrically Heated Curling Iron, of.l Vwhich the followingis a speciiication.

p This invention is a 'curling iron adapted for-use by men and women -incurling the hair.

VAccording to our invention we provide means for electrically .heatingone leg of the iron. Saidfelectrica-l heating means is exceedinglycompact in construction for the purpose of incasing it withina hollowleg, whereby the sizeof the leg of the/ new iron may be sameas standarddevices, and, in fact, the electrically heated iron resembles, for allpracticalY purposes, other styles of curling irons.

4 The heat-mg appliance of 'thisy invention transmits theAlieatde'velopcd by a current inv an electrical resistance directly tothe mass of metal forming the-hollow or tubular l g of the Iron, wherebyeconomy in the con- -sumption of the .electric current issecured.

'Said heating appliance is insulated electrically fromthe partsofthedvice in .order that it may be handled and` deed with perfeetsafety.

In the accompanyingirawings, We have illustrated one practical@'nbodiment vof the invention, but the construction shown therein is tobe understoo as illustrative only,

' and not as defining the limits of the invention. Y .A v

Figure l is a longitudinal section., partly in" elevation, of a curlingiron provided with means for electrically heating one of the legs tereof as contemplated by thisinve'ntion. Fig. 2 is a vertical crosssection, on

'an enlarged scale, through the tubular leg.

which contains the electric heating appliance 'Ot our inventioin'theplane of the section being indicated by the dotted line 2-2 of Fig. l.Fig 3 is a through a hollow leg equipped with a medied form of electricheater. -Fig 4 is a cross section on the line 4.-4.- of Fig. 3.

Fig. 5 is a detail View of a portion of an i electrical resistanceemployed in the heating appliance shown in Figs.'3 and 4.

v' In Fig. l ofthevdrawings we have shown I longitudinal section a'curling iron consisting of the legs, A,` B, which are pivoted togetherby a pin, `a, for the purposeo securing a relative movement of the Alegsone to the other. The leg, A, is i preferably tubular, said leg beingclosed at one end by a tip, a', and having at its other end a hollowshank, a2, on which is 4secured a handle, A. The other leg, B, ispreferlably trough shaped in cross section in order' that it may {itpart Wayaround the hollow leg, A. Said leg, B, is provided at one endwith 'a shank, b, on which is secured a The legs are pressed togetherhandle, B. by the action of a suitable spring, the same being shown invFig. 1 as afleaf or bowed spring, C, which is arranged between theshankS, b, a2, of the respective'legs, the end portionsv of said springbeing secured within the handles,- A, B.

vTh construction of the appliance as thus farscribed, except for thehollowor tubular leg, A, is similar'to Van ordinary4` or standard curling iron,l and inv this' connection it may be stated. that one`objectwhich we lhave in view is to provideY ane'w form of electricheater whichfils adapted for use in connection'with thiefh'ollw leg 1nsuch a manner as to avoid'increasing the slze of vso said hollow leg,whereby a curling iron-embodying this inventionl resembles ordinary" orstandarddevices except for theconductors which are employed forconveying an elect-ric current to and from the heater. The electricalheating appliance of this invention contemplates the Iemployment of anelectrical resistance which consists of a core or pencil composed,preferably, of carbon indicated at D in Figs. l and 2. The electricalresistance, howevermay be composed of material other than carbon, and insome instances we may employ a wire 'or ribbon, but .for colnpactness,durability and economy we prefer to employ a. carbon pencil of verysmall diameter. Said pencil.

extends longitudinally within the .hollow leg, A, and to one end of saidpencil there connected an electric conductor, e.v Tothe other end .ofsaid resistance formed by the carbon pencil there is connected a `shortwire, c2, which, in the embodimentof the iilven'tion represented byFigs. .l and 2, is connected to a/r'eturn. tube, E, said tube being`composed of copper orv other.v good conducting material. The metallicreturn tube,

E, vis soi-newhat larger in: diameter? than the carbon pencil,'D,'andthe tube is concentric with said pencil, said tube extendinglongi-Itudinally' withinAv the 'hollow A 'concentric penciland the metallictube are leg, A. The

insulated electrically one from the other by a tubular layer, F,composed of insulating material, such'as mica, 'andthe return. tube, E,is also insulated electrically from the hollow leg, A, by anothertubular layer, G, of

Ainsulating material, such as mica.

It willI be observed that the inner ends of thje carbon pencil, D, andthe metallic tube,

E, are connected electrically in series by the' conductor, e2, andyfui-, thermore, that a supply conductor, e, is vattached to the outerend of the carbon pencil. The current is conveyed' from the electricheater by a return conductor, e', which is attached to the inner end ofthe metalhctube, E, and said Y conductors e e are arran'ed within aretips,

cess, d3, of the shank, cr, forming a part of the hollow leg, A. Theconductors, e, e', run through the vhollow shank, a2, into -a cavity, i,ofthe handle, A', and through transverse openings a', of the handle runthe insulated wires I-I, the latter being fastened by a tie Lto thehandle, said conductors being also fastened together at h2, whereby theconductors are unitedte the handle by ilexible' ties which prevent theconductors from straining theV resistance. Said wires H, are united tothe wires e, e', of the resistance and thus the wires H are .attached to'the hollow handle, A', and the are connected electrically with.

conductors the leading wires .by whichthe current is supplied tothe'heating appliance within the hollowv le of the curling iron'. f

A modi-tie construction of the heater' is4 rod, D'. y Asa matter of factthe carbon pencil, D', ozFigs. 3, 4:, and 5 may be employed in lieu ofthe carbon pencil, D, in the heater oi Figs. 1 and 2, whereby thel.conductors e, ,55,v

wresistancein a manner to secure good electrical. contact/therewith. ametal-lic tube as' the return'lead for the 62 may be-attached-ftolthematerial of the Instead of using conductor e2, in the constructionv ofthe heater shown in Figs. .'l'and2, we .extend the Wire, `egfi'oinithe-inner end vof the resistance pencil, D'in=parallelrelation to saidpencil -v asshownin F1gs..3 and 4; The ret-urn wire,

v e2, thus extends lengthwise within the hollow y the conductor, e

The, return lead or wire, c2, is insulated electrically from thacarbonpcncil,D, by a tubular layer, F, insulab `ing material', and said returnlead or wire, e2, is furthermore insulated electrically from metalliccontact with the hollow leg, A, by

the `other tubular layer, G, composed also of insulating material.

In the manufacture of the electric heater shown in Figs. 1 and 2 Welirst prepare the resistance pencil, D, 'of the properflengt-h.

and diameter, or 4we, may employ the capped resistance pencil, D', ofFigs.3 and 5. The pencil is incased within the layer, F, of insulating.material, and around this layer is 'applied the metallic tube or sleeve,E. The

next insulating layer, G, is now fitted `around the metallic sleeve ortube, and the conductor, e2, having been attached to the inner endsY ofthe pencilv and the metallic sleeve, the heater islin a .condition to bcslipped cndwise .within the hollow leg, A, of the curling iron. 4

The procedure adopted in assembling the parts of the Iheater shown inFigs. 3, 4,' and :iis similar to ,that described in-Figs. land 2 exceptthat we incase the; return Wire, e2, between the insulating layers, F,G, of the he.ter. f 1 'l fh Ve re er to em )lor ani fas t ematerial foi?the manufalcture `@gbe tubular insulating layers, F, G, for the reasonthat this material may beusedinvery thin sheets or layers, vitetfectually insulates the resist: ance pencil from the-metallic Asleeveor `the return wire, and permits the heat develo d in the 'resistance bythe passage of4 an'e ectric current therethrough to be transmitteddirectly to the hollow leg which is com osed of a mass of heatabsorbingmetal, su li for example as copper.

The operation `of the invention will be readily understood from theforegoing description taken in connection with the drawings. An electriccurrent is 'conveyed to the resist-ance by the wire, ve, and isreturned' through the wire, e2, andthe metallic tube or sleeve, orthrough the return lead of said vwire. The heat developed bytheelectrical resistance is transmitted-through the thin layers ofinsulating material directly to the mass of metal composingthefleg', Ourconstruction enables the metal leg"V .to be heated. very quickly to therequired tempera-f` `turewwithin a short time andwith-a Very smallconsumption of current. 'The legs of the'curling'iron maybe opened bypressing the handles, A', B,toward each other in order that the hair tobel A,"after which the spring, C,fcloses the trough shapedleg, B,uponfthe hair coiled on the leg, A.

Y It is evidentthat the legs may be opened for quickly removing thedevice from the curled hair.

- curled may lbe v wrapped or coiled on the leg,

Having thusfully described the 'invention, whatwe claim as new, anddesire to see cure by Letters Patent is 1.' In l anelectrically heatedtool,`a pair of lar, a resistance within said tubular member,

e f L a returntub lar conductorincaslng said resistancve,"said4 tubular'conductor and the 'resi st ance l beingv electrically connected at 4oneend, and'- a plurality of insulations, one of which is between theresistance and the'tubula'r cnductor',fand another being between theconductorand a' 'wall of'said tubular member. v l .12. As .a new.article of manufacture, a

.hair curlerfpro'vided with ahollowleg com'- posed of heat-absorbing.met-al, .a resistance vpencil extending' lengthwise of and incasedwithmi said leg, a metallic tube incasing said pencil, an' interposedelectrical insulationbetween'said tube and the pencil, an elec'-l tricalconnection between corres onding ends of the pencil and Athe metal 1ctube,

. and another electrical insulation between the metallic tube and theheat-absorbing metal of said hollow leg. y Y

3. In device ofthe class' described, aresistance pencil,'an .independentmetallic'tube.-

'-ncasng said pencil and connected elec- V a--tubular .layer ofinsulating material be` tween the pencil and the aforesaid tube.l

" 4. In a 'device of the class described, a resistance pencil havingmetal l capped v ends,

an independent tube of' 'conducting mate-1 rial ineasing said pencilandcoinected .electricallyto one of the' capped ends thereof, and a.tubularlayer of. insulating material. between the pencil and themetallic tube.

giaciauy. therewith, whereby Said. tum igz 'adaptedftn's'erve as areturn conductor, and

Ina device of the 4class described,- two 'coperatin'g 1nembers, `one'ofwhich is a hol-i y low .mass of heat absorbingm'etal, eachlof .saidmembers having a shank` provided with.

a handle, anelectr cal resistance within the 'hollow member a -delectrically insulated'.- therefrom, acord anchored on the handle of-necting saidV cord with the respective of the' resistance.

HARRY HERTZBERG. MAURICE J. WOHL.

H. T. BERNHARD, LHV. GLASS.'

